This paper must include the belief systems of Christianity major persons of the religion and their contributions to the beliefs, along with a history of the religions themselves-Origins and Major events throughout history

the answers is b.   environments.

c it says nothing about connecting those 2 seas.

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.